The specific explanation is as follows:
First, if the price is below 7000 yuan, the potassium must be all potassium sulfate or potassium chloride, and it certainly does not contain trace elements. Because the metal ion activity of trace elements will produce antagonism with large elements, if trace elements are added, the mixture of large elements and trace elements will produce antagonism. It may be powder when it is produced, but it will become chaotic and ineffective when it is delivered to customers. So if you want to add trace elements, you must add EDTA trace elements (that is, chelated trace elements), because chelated trace element metal ions are relatively stable, so they will not react with a large number of elements. EDTA is a chelating agent, but iron, copper, manganese and zinc are added. It is necessary to turn trace elements into water, heat them, and then turn them into powder through various reactions and processes, and the cost is more than 100 times. Take the actual price as an example. The market price of ferrous sulfate is 230 yuan/ton, and the market price of ferric EDTA is 26,000 yuan/ton. Copper sulfate is about 7000 yuan, and copper EDTA is about 38000 yuan. If trace elements are added, the cost will increase by 1000 yuan/ton.
Second, 8000- 10000 yuan/ton, all with their own certificates, but because they are not well-known enterprises, the price can not be sold. Because they use their own certificates, no unqualified products are all trace elements. Because the price can't be sold, they want to make more money, so the water-soluble fertilizer used by such manufacturers is potassium sulfate, as long as the content is enough. Potassium sulfate costs more than 3,000 yuan a ton, domestic potassium nitrate costs more than 7,000 yuan a ton, and imported potassium nitrate costs 8-9,000 yuan a ton, so the effect of using potassium sulfate and potassium nitrate is definitely different (the effect is not very good), so hormones are generally added to improve the effect.
3. 12000- 16000 yuan/ton, these are some well-known domestic manufacturers, such as: Ma Sanfu in Guangxi, Shanghai Fangdian, Zhengzhou Zhongwei and Zheng, all of which pay attention to their own brands, so they all use potassium nitrate.
Fourth, 13000- 18000 yuan/ton, such as Germany Xinlu water-soluble fertilizer, which is an international brand with mature formula and advanced technology for many years. Of course, when I say this import, I mean real imports, not those fake imports.